;;; r6rs-exceptions.test --- Test suite for R6RS (rnrs exceptions)

;;      Copyright (C) 2010 Free Software Foundation, Inc.
;;
;; This library is free software; you can redistribute it and/or
;; modify it under the terms of the GNU Lesser General Public
;; License as published by the Free Software Foundation; either
;; version 3 of the License, or (at your option) any later version.
;; 
;; This library is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; Lesser General Public License for more details.
;; 
;; You should have received a copy of the GNU Lesser General Public
;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA


(define-module (test-suite test-rnrs-exceptions)
  :use-module ((rnrs conditions) :version (6))
  :use-module ((rnrs exceptions) :version (6))
  :use-module (test-suite lib))

(with-test-prefix "with-exception-handler"
  (pass-if "handler invoked on raise"
    (let ((success #f))
      (call/cc
       (lambda (continuation)
	 (with-exception-handler 
	  (lambda (condition) (set! success #t) (continuation))
	  (lambda () (raise (make-violation))))))
      success))

  (pass-if "handler not invoked unless raise"
    (let ((success #f))
      (call/cc 
       (lambda (continuation)
	 (with-exception-handler
	  (lambda (condition) (continuation))
	  (lambda () (set! success #t)))))
      success)))

(with-test-prefix "raise"
  (pass-if "raise causes &non-continuable after handler"
    (let ((success #f))
      (call/cc 
       (lambda (continuation)
	 (with-exception-handler
	  (lambda (condition)
	    (set! success (non-continuable-violation? condition))
	    (continuation))
	  (lambda ()
	    (with-exception-handler
	     (lambda (condition) #f)
	     (lambda () (raise (make-violation))))))))
      success)))

(with-test-prefix "raise-continuable"
  (pass-if "raise-continuable invokes continuation after handler"
    (let ((handled #f)
	  (continued #f))
      (call/cc
       (lambda (continuation)
	 (with-exception-handler
	  (lambda (condition) (set! handled #t))
	  (lambda ()
	    (raise-continuable (make-violation))
	    (set! continued #t)))))
      (and handled continued))))

(with-test-prefix "guard"
  (pass-if "guard with matching cond without else"
    (let ((success #f))
      (guard (condition ((error? condition) (set! success #t)))
	     (raise (make-error)))
      success))

  (pass-if "guard without matching cond without else"
    (let ((success #f))
      (call/cc 
       (lambda (continuation)
	 (with-exception-handler
	  (lambda (condition) (set! success (error? condition)) (continuation))
	  (lambda ()
	    (guard (condition ((irritants-condition? condition) #f))
		   (raise (make-error)))))))
      success))
	    
  (pass-if "guard with else and without matching cond"
    (let ((success #f))
      (guard (condition ((irritants-condition? condition) #f)
			(else (set! success #t)))
	     (raise (make-error)))
      success))

  (pass-if "guard with cond => syntax"
    (guard (condition (condition => error?)) (raise (make-error)))))
